Bones Start Off as Cartilage. When a baby is developing, the whole skeletal system is essentially made up of cartilage, or in other words flexible connective tissue. There are several different forms of connective tissue. Some examples would be tendons, ligaments, adipose (fat), cartilage, and blood. Chondrocytes are mature cells that produce cartilage. Chondro– means … More Bones- Ossification(simple version)
Layers of the Skin The skin is one of the many important organs of the human body. Your skin has several different layers. The first being the epidermis. The epidermis is the outer most layer of your skin. This layer is composed of mostly dead cells that are constantly shedding off of your body. The … More How does our skin heal?
What is a bruise? Discoloration of the skin due to the rupturing of blood vessels. Another common name for a bruise is a contusion. Causes There are many different reasons that someone might get a bruise. Here are a few… Bumping into something or someone Strenuous exercise Blood disorders Vitamin deficiency Old age How do … More Bruises
The human body consists of 11 different organ systems. I will briefly describe each one. Circulatory system- transports oxygenated and non-oxygenated blood through your body. This includes your heart, blood vessels, and arteries Respiratory system- allows air to diffuse into your lungs and then can be transported around your body via the circulatory system. This … More Human Organ Systems
History of Flying Back in 1903 the Wright brothers, Orville and Wilbur, were the two inventors who developed the first working motorized airplane. They weren’t the first ones to try and fly though. The Wright brothers did make the first fixed-wing airplane and create controls for the airplane making it possible to fly. There were … More How do airplanes fly?
Structure of the Heart There are several different chambers in the heart. The lower chambers are called left and right ventricle. The upper chambers are the left and right atrium. The non-oxygenated blood goes through the right atrium and right ventricle. While the oxygenated blood goes through the left atrium and left ventricle. The aorta is the main artery … More Heart Attacks
What determines someone’s blood type? There are many different types of blood a person could have. There are 4 main types of blood A, AB, B, and O. Determining blood types is all about the presence or absence of two antigens. These antigens are either A or B and their on the surface of red … More Blood Types
The Make-Up of the Earth The Earth is composed of seven major tectonic plates and many little ones. Look at the picture below to see them. These plates move into, above, and push past one another. These movements result in earthquakes. Types of Faults There are three different kinds of faults. Convergent, divergent, and transforming faults … More Earthquakes
Unlike animal cells, plant cells have a tough wall around the membrane. Animal cells just have the flexible cell membrane. In plants it is called the Cell Wall. This helps the plants retain water, stay rigid, and it is also helpful for protection. Cell walls help keep the plant from exploding from too much water uptake! … More Plant Organelles
All animal cells will have these three things. Cell Membrane, Nucleus, and Cytoplasm. These are called organelles or little organs. Each living cell is unique with it’s purpose, but most cells will have similar organelles. In fact all animal cells have the same organelles and plant cells have the same organelles. Some organelles are specific … More Cell Organelles